Description

NSE announces digital acceptance of requests on ENIT from March 16, 2026 for changes related to increased permissible IPs per rack variant and revised CaaS framework restrictions.

Summary

NSE has issued Circular Ref. No. 14/2026 (Download Ref: NSE/MSD/73246) as a follow-up to circular NSE/MSD/73068 dated February 27, 2026. This circular formally enables digital acceptance of all related requests (Rack Desire/Allotment, IP Allotment, TM Enrolment) on ENIT effective March 16, 2026 (BOD) for two sets of changes: (1) increased maximum permissible Interactive IPs per rack variant, and (2) a revised and liberalised CaaS (Colocation-as-a-Service) framework.

Key Points

  • Maximum permissible Interactive IPs have been increased across all rack variants: HPD from 2×60 to 2×80, Full Rack from 60 to 80, Half Rack from 30 to 40, and Quarter Rack from 15 to 20.
  • CaaS Vendors can now apply for any rack variant (HPD, Full, Half, or Quarter) as per their business requirements.
  • The cap on maximum members per rack under CaaS (60 per Full Rack, 30 per Half Rack) has been discontinued.
  • The restriction limiting members to only one contract with a vendor (maximum 2 vendors at any time) for CaaS has been discontinued.
  • The limitation of 4 order connectivities per member-CaaS vendor combination has been discontinued; members may now apply for any number of order connectivities subject to rack IP and power limits.
  • All other provisions of the colocation consolidated circular NSE/MSD/67756 dated April 29, 2025 remain unchanged.

Regulatory Changes

  • Partial modification to Section II.A of NSE/MSD/67756 (April 29, 2025): revised maximum Interactive IP counts per rack variant.
  • Partial modification to Section IV of NSE/MSD/67756 (April 29, 2025): liberalised CaaS framework removing member-per-rack caps, vendor contract restrictions, and order connectivity limits.

Compliance Requirements

  • Colocation participants and CaaS Vendors must submit all related requests (Rack Desire/Allotment, IP Allotment, TM Enrolment) digitally through ENIT from March 16, 2026 onwards.
  • Members must still adhere to the maximum permissible IP limits for the subscribed rack type and the maximum power consumption limits set by the Exchange.
  • All other existing terms and conditions of the colocation consolidated circular NSE/MSD/67756 remain applicable.

Important Dates

  • March 11, 2026: Circular issued.
  • March 16, 2026 (BOD): Digital acceptance of all related requests (Rack Desire/Allotment, IP Allotment, TM Enrolment) goes live on ENIT.

Impact Assessment

This circular benefits colocation participants and CaaS vendors by expanding IP capacity per rack and significantly relaxing operational constraints under the CaaS framework. High-frequency trading firms and algorithmic traders using NSE colocation will have greater flexibility in managing IP allocations and vendor relationships. The removal of member-per-rack caps and order connectivity limits allows CaaS vendors to scale their business more efficiently. The impact is limited to entities participating in NSE’s colocation ecosystem and does not directly affect broader market participants or listed securities.

Impact Justification

Operational update for colocation participants and CaaS vendors with expanded IP limits and relaxed CaaS restrictions; affects only entities using NSE colocation infrastructure.